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https://issues.apache.org/jira/browse/HIVE-26160?focusedWorklogId=762869&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-762869
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ASF GitHub Bot logged work on HIVE-26160:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 27/Apr/22 13:23
Start Date: 27/Apr/22 13:23
Worklog Time Spent: 10m
Work Description: zabetak commented on code in PR #3246:
URL: https://github.com/apache/hive/pull/3246#discussion_r859794193
##########
ql/src/java/org/apache/hadoop/hive/ql/parse/CalcitePlanner.java:
##########
@@ -2107,7 +2108,10 @@ private boolean
isMaterializedViewRewritingByTextEnabled() {
}
private RelNode applyMaterializedViewRewritingByText(
- ASTNode queryToRewriteAST, RelNode originalPlan, RelOptCluster
optCluster) {
+ ASTNode queryToRewriteAST,
+ RelNode originalPlan,
+ RelOptCluster optCluster,
+ RelMetadataProvider metadataProvider) {
Review Comment:
Is it necessary to add new `metadataProvider` parameter? Does
`optCluster.getMetadataProvider()` return a different provider from the one
passed as parameter?
Issue Time Tracking
-------------------
Worklog Id: (was: 762869)
Time Spent: 50m (was: 40m)
> Materialized View rewrite does not check tables scanned in sub-query
> expressions
> --------------------------------------------------------------------------------
>
> Key: HIVE-26160
> URL: https://issues.apache.org/jira/browse/HIVE-26160
> Project: Hive
> Issue Type: Bug
> Components: CBO, Materialized views
> Reporter: Krisztian Kasa
> Assignee: Krisztian Kasa
> Priority: Major
> Labels: pull-request-available
> Time Spent: 50m
> Remaining Estimate: 0h
>
> Materialized View rewrite based on exact sql text match uses the initial CBO
> plan to explore possibilities to change the query plan or part of the plan to
> an MV scan.
> This algorithm requires the tables scanned by the original query plan. If the
> query contains sub query expressions the tables scanned by the sub query are
> not listed which can lead to rewrite the original plan to scan an outdated MV.
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